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OMRON SCIENTIFIC TECHNOLOGIES INC.
Fremont CA USA
Tel: 1/888/510-4357 in USA and Canada
© OSTI 1209 PN99584-0050 Rev. E
Original Instructions
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4.3 O PERATING MODE SELECTION
Operating mode is selected by setting positions 1 and 2 of Switches A and B, located under the
controller cover. Refer to Table 4-1. Any mismatch between the settings of Switch A and B will result
in an alarm condition. In addition, if the configuration switch settings change
while the system is on, it
will enter the alarm state with the safety outputs off.
Warning! Disconnect power before accessing the controller assembly.
Table 4-1 Operating Mode Switch Settings
SWITCH A SWITCH B
OPERATING MODE 1 2 1 2
Automatic Start (default setting) CLOSED/ON CLOSED/ON CLOSED/ON CLOSED/ON
Start interlock OPEN/OFF CLOSED/ON OPEN/OFF CLOSED/ON
Start/Restart interlock OPEN/OFF OPEN/OFF OPEN/OFF OPEN/OFF
Not Allowed CLOSED/ON OPEN/OFF CLOSED/ON OPEN/OFF
4.4 S TART SWITCH TYPE SELECTION
The type of Start switch (Normally Open or Normally Closed) used by the 4700 system is selectable
by a jumper located under the controller cover. Refer to Figure 3-4 DIN Controller
Components and
Figure 3-5 Metal Chassis Controller Components. Placin
g the jumper between Pins 1 and 2 of JMP 1
selects a Normally Closed Start Switch. Placing the jumper between 2 and 3 selects a Normally Open
Start switch.
Note: If there is a mismatch between the
type of Start
selected and used, (i.e. jump
er between Pins 1
and 2 and Normally Open Start Switch used) the switch must be pressed and released twice before
the system will enter a Run state.
5 D
ETECTION
O
PTIONS
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Warning! Use of Exact Channel Select and/or Floating Blanking will make the 4700 system less sensitive to
objects in the detection zone. Improper use of either can result in severe injury
to personnel. Exact Channel
Select may require a hard barrier guard (see Section 5.8
Additional Guarding When Using Exact Channel
Select
), Exact Channel Select or Floating Blanking requires an increase in the safety distance. Read the
following section carefully.
- To prevent unauthorized modification of the detection zone. The syste
m controller should be inst
alled in an
enclosure with supervisor-controlled access.
- If the object to be ignored by the Channel Selected beams does not completely
prevent access to the hazardous
area, then either use a hard guard or other means to block access or increase the minimum safe distance as
required by the proper formula.
- Any beams which are not in alignment at the time of Channel Select pro
gramming may be inadvertently
deselected. Use the OMRON STI Test Procedure to verify the correct configuration.
- Floating Blanking increases the minimum safety distance therefore test object size will
increase.
- After programming or activating Channel Select
or Floating Blanking, to avoid unexpected areas where the
system may not sense an intrusion into the detection zone, use a proper size test object to perform the OMRON
STI Test Procedure.
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